David S. Yang

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Fremont, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Soil fragmentation members and multiple lateral support structures...
- Patent number 5,417,522
- Issue date May 23, 1995
- S. M. W. Seiko
- Ikuo Kono
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Methods for in situ construction of deep soil-cement structures
- Patent number 5,378,085
- Issue date Jan 3, 1995
- S. M. W. Seiko
- Ikuo Kono
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Spiral flights for improved soil mixing and efficient boring for us...
- Patent number 5,368,415
- Issue date Nov 29, 1994
- S. M. W. Seiko
- Ikuo Kono
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING